Bought them on Craigslist so I had no choice but I got the world cup model. When I first step in I can barely get the first notch on my buckles. By the end of the day Im at 2nd and 3rd notches. Theyre warm and I have no painful points. The Gara have less volume. Im 6ft2in 210lbs and my legs are pretty average in diameter. With the original liners I can start at 3rd notches and end up near the limit of the buckles. Really enjoy these boots. The strap at the top is awesome for getting a great fit.The best deal on zipfits is from the U.K. Many retailers offering them for 185 euro. About 200usd.